Here is an overview of how slab plywood doors work and what to expect:

Slab plywood doors are not grain-matched from one door to the next. Each sheet of plywood can vary in grain pattern and tone because it may come from a different tree, a different part of the tree, or even a different production run. Because of this, continuous grain across multiple doors is not possible with standard slab plywood construction.

True grain-matching requires book-matched veneers from the same log, cut and sequenced together at the mill. This is a specialty manufacturing process and carries a significantly higher cost. In addition, if even one door ever needs to be replaced in the future, the replacement will inevitably come from a different batch and will no longer match—meaning the entire set would have to be remade.

We include these terms so customers understand that variations in tone and grain are normal and expected with natural wood veneer products. Our pricing reflects this.

Example:
A customer recently ordered slab cherry plywood doors. Cherry is extremely sensitive to light and will naturally darken and redden over a few months. A replacement door was lighter in color (as expected), and the customer requested we stain it to match the aged ones. However, staining it to match the darker tone would cause the new door to eventually become too dark as it continues to age. After discussion, we offered—at the customer’s expense—to special-order book-matched cherry plywood from the mill. This took about six months and was a very complex process. The experience reinforced why we do not offer grain-matching as a standard option.

If You Want a Consistent Grain Look

If visual consistency is a priority, we strongly recommend our Barker Modern line:
https://barkermodern.com

Here are the specific terms mentioned on Citycabinets.com
https://www.citycabinets.com/article-a/4.htm

6. SLAB PLYWOOD DOORS- Slab plywood doors are real wood veneer over plywood with a “banded” edge. Edge banding is of a matching wood species. A banded edge door may have a rough seam that may show through the paint/stain when the door is finished. By selecting/ordering this door style you understand and agree to the fact that wood grain and small defects will show through the paint on the face of the door and the seam on the edges. Seam issues will not be covered under warranty as this is an edge-banded real wood product and these issues have been disclaimed to you prior to ordering. We highly recommend ordering a full painted or stained door sample to view the quality and look first-hand prior to placing your main order.

In addition, due to the manner in which the veneered panels are cut from the panel stock, it is not possible to guarantee that the grain and color tone will be continuous from front to front on a single cabinet, or match up with the grain pattern on any adjacent cabinetry installed (grain matching is not available). In an effort to maintain efficiency and reduce waste, grain matching is not a service that we can offer, and mismatched grain patterns will not be grounds for replacement under warranty in any circumstance. This caveat applies to any other veneered panel stock sold through this website as well, such as moldings or custom panels.